Annual nitrogen loads exported to the Chesapeake Bay by source
By Chesapeake Bay Activities
November 2021 (approx.)
Detailed Description
Annual nitrogen loads exported to the Chesapeake Bay by source, 1950–2050. Fertilizer and manure are combined into a single agricultural source for the modeled time period. After 2010, the two future agricultural scenarios represent (1) increased intensity of both crop and animal agriculture, and (2) decreased intensity of both crop and animal agriculture (figure OV.S1). Only the future scenario for constant wastewater treatment technology is shown (Hopple and others, 2020, 2021)
Nitrogen in the Chesapeake Bay watershed—A century of change, 1950–2050
Sources/Usage
Public Domain.
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Related
Pennsylvania and the Chesapeake Bay Watershed
USGS provides monitoring, analysis, modeling and research on streams and water quality to better understand the fate and transport of nutrients and sediment to the Susquehanna and other rivers, and their tributaries, and eventually to the Chesapeake Bay. Additional research focuses on emerging contaminants and other stressors that effect human and aquatic life in the watershed and estuary.
Greatest Opportunities for Future Nitrogen Reductions to the Chesapeake Bay Watershed are in Developed and Agricultural Areas
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